Preheat your oven to 350˚.
Remove your Parker House rolls from their tray, and slice through the middle.
Place rolls back in the tray, and remove the top layer of the rolls, and set them aside. Be careful to set it so it’s going the same direction and the rolls will line up when you place it back on top.
In a small pot, melt the 1 stick of butter, 3/4 cup brown sugar, 2 tablespoons of dijon mustard, and 1 tablespoon of minced onions together. Bring to a boil.
Once it’s boiling, turn off the heat.
Drizzle half of the brown sugar mixture on the bottom half of your parker house rolls.
Add the shaved ham on top of the brown sugared rolls, in an even layer.
Top with the remaining brown sugar mixture.
Place the top of your rolls back.
Melt 1 tablespoon of butter with 1 teaspoon of poppyseeds.
Slather this on top of the rolls.
Cover with tin foil, and bake for 30 minutes at 350˚.
Remove from the oven and allow to cool for 5 minutes before slicing and serving!

If you’re not a fan of poppyseeds, leave them (and the butter!) off in the final stage before baking.
These can be made a couple of days in advance, then baked before serving.
Find it online: https://sweetpealifestyle.com/naughty-hammie-sammies/